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Do you have a instantaneous MPG gauge in the vehicle ?
If not, you
need one... It’s the most
important mod...
Period...
(Scanguage, UltraGauge, Torque Pro or similar app.)
It allows the steering nut to be adjusted and also allows one to evaluate vehicle modifications quickly and easily.
Increasing tire pressure to the max psi as indicated on the sidewall can easily net gains of up to 10% without losing drive ability and or safety. Use the search function to research, as this topic has been covered many times. A member here (CapriRacer) has written or replied extensively about tire related topics. If I remember correctly he works in the tire industry.
I would take care of the low hanging fruit first before doing suspension mods.
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